Results 21 to 30 of about 2,611 (163)

Assessing the effectiveness of conservation measures : resolving the "wicked" problem of the Steller sea lion [PDF]

open access: yes, 2010
“Wicked” problems are those that are complex and that change when solutions are applied. Many conflicts in conservation fall in to this category.
Boyd, Ian Lamont, I.L. Boyd
core   +1 more source

Stranding trends of Steller sea lions Eumetopias jubatus 1990-2015

open access: yesEndangered Species Research, 2019
Distinct population segments of Steller sea lion (SSL) Eumetopias jubatus have experienced different population trends over the last 5 decades, rendering the need for retrospective study. By identifying long-term stranding trends of SSLs we can develop a
Esquible, J, Atkinson, S
doaj   +1 more source

Linking reproduction and survival can improve model estimates of vital rates derived from limited time-series counts of pinnipeds and other species. [PDF]

open access: yesPLoS ONE, 2013
We propose a method to model the physiological link between somatic survival and reproductive output that reduces the number of parameters that need to be estimated by models designed to determine combinations of birth and death rates that produce ...
Brian C Battaile, Andrew W Trites
doaj   +1 more source

New data on the number of northern fur seal ( Callorhinus ursinus), Steller sea lion ( Eumetopias jubatus), and spotted seal ( Phoca largha) at Tyuleny Island (Okhotsk Sea)

open access: yesИзвестия ТИНРО, 2014
The latest data on abundance and distribution of northern fur seal ( Callorhinus ursinus ), Steller sea lion ( Eumetopias jubatus ), and spotted seal ( Phoca largha ) at Tyuleny Island (Okhotsk Sea) are presented.
Alexey E. Kuzin
doaj   +1 more source

Assessment of Competition between Fisheries and Steller Sea Lions in Alaska Based on Estimated Prey Biomass, Fisheries Removals and Predator Foraging Behaviour. [PDF]

open access: yesPLoS ONE, 2015
A leading hypothesis to explain the dramatic decline of Steller sea lions (Eumetopias jubatus) in western Alaska during the latter part of the 20th century is a change in prey availability due to commercial fisheries.
Tabitha C Y Hui   +3 more
doaj   +1 more source

Inflation and deflation pressure-volume loops in anesthetized pinnipeds confirms compliant chest and lungs

open access: yesFrontiers in Physiology, 2014
We examined structural properties of the marine mammal respiratory system, and tested Scholander’s hypothesis that the chest is highly compliant by measuring the mechanical properties of the respiratory system in five species of pinniped under anesthesia
Andreas eFahlman   +8 more
doaj   +1 more source

Drag, but not buoyancy, affects swim speed in captive Steller sea lions

open access: yesBiology Open, 2014
Swimming at an optimal speed is critical for breath-hold divers seeking to maximize the time they can spend foraging underwater. Theoretical studies have predicted that the optimal swim speed for an animal while transiting to and from depth is ...
Ippei Suzuki   +5 more
doaj   +1 more source

Alpha diversity of marine mammals of the Mexican South Pacific

open access: yesRevista Mexicana de Biodiversidad, 2018
Knowledge of the alpha diversity contributes to the determination of conservation priorities by identifying regions with high species richness and/or a large number of endemic, rare, or endangered species.
Francisco Villegas-Zurita   +3 more
doaj   +1 more source

Examining the effect of environmental variability on the viability of endangered Steller sea lions using an integrated population model

open access: yesEndangered Species Research, 2023
Understanding spatio-temporal variability in demography and the influence of environmental conditions offers insight into the factors underlying population dynamics.
AJ Warlick   +4 more
doaj   +1 more source

Intraperitoneal implantation of life-long telemetry transmitters in otariids

open access: yesBMC Veterinary Research, 2008
Background Pinnipeds, including many endangered and declining species, are inaccessible and difficult to monitor for extended periods using externally attached telemetry devices that are shed during the annual molt.
Haulena Martin   +3 more
doaj   +1 more source

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